/* $OpenBSD: eigrp.h,v 1.6 2016/09/02 16:34:20 renato Exp $ */ /* * Copyright (c) 2015 Renato Westphal <renato@openbsd.org> * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ /* EIGRP protocol definitions */ #ifndef _EIGRP_H_ #define _EIGRP_H_ /* misc */ #define EIGRP_VERSION 2 #define IPPROTO_EIGRP 88 #define EIGRP_IP_TTL 2 /* EIGRP multicast group addresses */ #define AllEIGRPRouters_v4 "224.0.0.10" #define AllEIGRPRouters_v6 "ff02::a" #define EIGRP_INFINITE_METRIC ((uint32_t )(~0)) #define RTP_RTRNS_INTERVAL 5 #define RTP_RTRNS_MAX_ATTEMPTS 16 #define RTP_ACK_TIMEOUT 100000 #define EIGRP_VERSION_MAJOR 1 #define EIGRP_VERSION_MINOR 2 #define EIGRP_MIN_AS 1 #define EIGRP_MAX_AS 65535 #define DEFAULT_HELLO_INTERVAL 5 #define MIN_HELLO_INTERVAL 1 #define MAX_HELLO_INTERVAL 65535 #define DEFAULT_HELLO_HOLDTIME 15 #define MIN_HELLO_HOLDTIME 1 #define MAX_HELLO_HOLDTIME 65535 #define EIGRP_SCALING_FACTOR 256 #define DEFAULT_DELAY 10 #define MIN_DELAY 1 #define MAX_DELAY 16777215 #define DEFAULT_BANDWIDTH 100000 #define MIN_BANDWIDTH 1 #define MAX_BANDWIDTH 10000000 #define DEFAULT_RELIABILITY 255 #define MIN_RELIABILITY 1 #define MAX_RELIABILITY 255 #define DEFAULT_LOAD 1 #define MIN_LOAD 1 #define MAX_LOAD 255 #define MIN_MTU 1 #define MAX_MTU 65535 #define MIN_KVALUE 0 #define MAX_KVALUE 254 #define DEFAULT_ACTIVE_TIMEOUT 3 #define MIN_ACTIVE_TIMEOUT 0 #define MAX_ACTIVE_TIMEOUT 65535 #define DEFAULT_MAXIMUM_HOPS 100 #define MIN_MAXIMUM_HOPS 1 #define MAX_MAXIMUM_HOPS 255 #define DEFAULT_MAXIMUM_PATHS 4 #define MIN_MAXIMUM_PATHS 1 #define MAX_MAXIMUM_PATHS 32 #define DEFAULT_VARIANCE 1 #define MIN_VARIANCE 1 #define MAX_VARIANCE 128 #define EIGRP_HEADER_VERSION 2 #define EIGRP_VRID_UNICAST_AF 0x0000 #define EIGRP_VRID_MULTICAST_AF 0x0001 #define EIGRP_VRID_UNICAST_SF 0x8000 /* EIGRP packet types */ #define EIGRP_OPC_UPDATE 1 #define EIGRP_OPC_REQUEST 2 #define EIGRP_OPC_QUERY 3 #define EIGRP_OPC_REPLY 4 #define EIGRP_OPC_HELLO 5 #define EIGRP_OPC_PROBE 7 #define EIGRP_OPC_SIAQUERY 10 #define EIGRP_OPC_SIAREPLY 11 struct eigrp_hdr { uint8_t version; uint8_t opcode; uint16_t chksum; uint32_t flags; uint32_t seq_num; uint32_t ack_num; uint16_t vrid; uint16_t as; }; /* EIGRP header flags */ #define EIGRP_HDR_FLAG_INIT 0x01 #define EIGRP_HDR_FLAG_CR 0x02 #define EIGRP_HDR_FLAG_RS 0x04 #define EIGRP_HDR_FLAG_EOT 0x08 /* TLV record */ struct tlv { uint16_t type; uint16_t length; }; #define TLV_HDR_LEN 4 struct tlv_parameter { uint16_t type; uint16_t length; uint8_t kvalues[6]; uint16_t holdtime; }; struct tlv_sw_version { uint16_t type; uint16_t length; uint8_t vendor_os_major; uint8_t vendor_os_minor; uint8_t eigrp_major; uint8_t eigrp_minor; }; struct tlv_mcast_seq { uint16_t type; uint16_t length; uint32_t seq; }; struct classic_metric { uint32_t delay; uint32_t bandwidth; uint8_t mtu[3]; /* 3 bytes, yeah... */ uint8_t hop_count; uint8_t reliability; uint8_t load; uint8_t tag; uint8_t flags; }; #define F_METRIC_SRC_WITHDRAW 0x01 #define F_METRIC_C_DEFAULT 0x02 #define F_METRIC_ACTIVE 0x04 struct classic_emetric { uint32_t routerid; uint32_t as; uint32_t tag; uint32_t metric; uint16_t reserved; uint8_t protocol; uint8_t flags; }; #define EIGRP_EXT_PROTO_IGRP 1 #define EIGRP_EXT_PROTO_EIGRP 2 #define EIGRP_EXT_PROTO_STATIC 3 #define EIGRP_EXT_PROTO_RIP 4 #define EIGRP_EXT_PROTO_HELLO 5 #define EIGRP_EXT_PROTO_OSPF 6 #define EIGRP_EXT_PROTO_ISIS 7 #define EIGRP_EXT_PROTO_EGP 8 #define EIGRP_EXT_PROTO_BGP 9 #define EIGRP_EXT_PROTO_IDRP 10 #define EIGRP_EXT_PROTO_CONN 11 /* EIGRP TLV types (v1.2) */ #define TLV_PROTO_GENERAL 0x0000 #define TLV_PROTO_IPV4 0x0100 #define TLV_PROTO_IPV6 0x0400 #define TLV_PROTO_MASK 0xff00 #define TLV_ROUTE_REQUEST 0x0001 #define TLV_ROUTE_INTERNAL 0x0002 #define TLV_ROUTE_EXTERNAL 0x0003 #define TLV_ROUTE_COMMUNITY 0x0004 #define TLV_TYPE_PARAMETER (TLV_PROTO_GENERAL | 0x0001) #define TLV_TYPE_AUTH (TLV_PROTO_GENERAL | 0x0002) #define TLV_TYPE_SEQ (TLV_PROTO_GENERAL | 0x0003) #define TLV_TYPE_SW_VERSION (TLV_PROTO_GENERAL | 0x0004) #define TLV_TYPE_MCAST_SEQ (TLV_PROTO_GENERAL | 0x0005) #define TLV_TYPE_PEER_TERM (TLV_PROTO_GENERAL | 0x0007) #define TLV_TYPE_IPV4_REQUEST (TLV_PROTO_IPV4 | TLV_ROUTE_REQUEST) #define TLV_TYPE_IPV4_INTERNAL (TLV_PROTO_IPV4 | TLV_ROUTE_INTERNAL) #define TLV_TYPE_IPV4_EXTERNAL (TLV_PROTO_IPV4 | TLV_ROUTE_EXTERNAL) #define TLV_TYPE_IPV4_COMMUNITY (TLV_PROTO_IPV4 | TLV_ROUTE_COMMUNITY) #define TLV_TYPE_IPV6_REQUEST (TLV_PROTO_IPV6 | TLV_ROUTE_REQUEST) #define TLV_TYPE_IPV6_INTERNAL (TLV_PROTO_IPV6 | TLV_ROUTE_INTERNAL) #define TLV_TYPE_IPV6_EXTERNAL (TLV_PROTO_IPV6 | TLV_ROUTE_EXTERNAL) #define TLV_TYPE_IPV6_COMMUNITY (TLV_PROTO_IPV6 | TLV_ROUTE_COMMUNITY) #define TLV_TYPE_MASK 0x00ff /* TLV lengths */ #define TLV_TYPE_PARAMETER_LEN 0x000C #define TLV_TYPE_SW_VERSION_LEN 0x0008 #define TLV_TYPE_MCAST_SEQ_LEN 0x0008 #define TLV_TYPE_IPV4_INT_MIN_LEN 0x0019 #define TLV_TYPE_IPV6_INT_MIN_LEN 0x0025 #endif /* _EIGRP_H_ */
